Ruby Date +函数
Date#+()是一个Date类的方法,它为日期添加一个数字值,并返回一个日期对象,指向自我之后的其他日子。
语法。Date.+()
参数。日期值
返回:在日期中加入一个数字值后,指向自己之后的其他日子的日期对象。
例子 #1 :
# Ruby code for Date.+() method
# loading date
require 'date'
# declaring Date
a = Date.new(2019, 1, 1)
# declaring Date
b = Date.jd(2452004)
# declaring Date
c = Date.ordinal(2019, 12)
# Date
puts "Date a : #{a}\n\n"
puts "Date b : #{b}\n\n"
puts "Date c : #{c}\n\n\n\n"
# + form
puts "Date a + form : #{a + Rational(3, 2)}\n\n"
puts "Date b + form : #{b + Rational(10, 2)}\n\n"
puts "Date c + form : #{c + Rational(10, 4)}\n\n"
输出:
Date a : 2019-01-01
Date b : 2001-04-04
Date c : 2019-01-12
Date a + form : 2019-01-02
Date b + form : 2001-04-09
Date c + form : 2019-01-14
例子 #2 :
# Ruby code for Date.+() method
# loading date
require 'date'
# declaring Date
a = Date.parse('2019-01-01')
# declaring Date
b = Date.strptime('03-12-2019', '%d-%m-%Y')
# declaring Date
c = Date.commercial(2019, 5, 6)
# Date
puts "Date a : #{a}\n\n"
puts "Date b : #{b}\n\n"
puts "Date c : #{c}\n\n\n\n"
# + form
puts "Date a + form : #{a + Rational(3, 2)}\n\n"
puts "Date b + form : #{b + Rational(10, 2)}\n\n"
puts "Date c + form : #{c + Rational(10, 4)}\n\n"
输出:
Date a : 2019-01-01
Date b : 2019-12-03
Date c : 2019-02-02
Date a + form : 2019-01-02
Date b + form : 2019-12-08
Date c + form : 2019-02-04